Closure for collapsible tubes



Feb. 14, 1939. H Rf HR EDER 2,146,993

CLOSURE F OR COLLAPSIBLE TUBES Filed Oct. 11, 1958 fi i Y 5;-

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Patented Feb. 14, 1939 UNITED STATES PATENT OFFICE CLOSURE FORCOLLAPSIBLE TUBES Herman R. Schroeder, Jacksonville, Fla. ApplicationOctober 11, 1938, Serial No. 234,470 i 1 Claim.

My invention relates to collapsible tubes and more particularly toimprovements in closures therefor.

The invention is designed with the particular object in view ofequipping such tubes with a screw tight closure cap permanently attachedto the neck of the tube and adapted under rotation thereof to open andclose the latter and for screwing down tight in the closing positionthereof to hermetically seal the tube.

To the accomplishment of the above, and subordinate objects presentlyappearing, a preferred embodiment of my invention has been illustratedin the accompanying drawing, set forth in detail in thesucceedingdescription and defined in the claim appended hereto.

In said drawing:

Figure 1 is a view in side elevation illustrating a portion of acollapsible tubeequipped accord- 20 ing to my invention and looking atone side thereof.

Figure 2 is a similar view looking at the opposite side thereof.

Figure 3 is a view similar to Figure 1 and 25 partly in longitudinalsection.

Figure 4 is a view intop plan.

Figure 5 is a view in transverse section taken onthe line 5-5 of Figure3 looking in the direction indicated by the arrows.

30 Referring to the drawing by numerals, l designates the body of theusual collapsible tube which, according to my invention, is equippedwith an externally threaded neck 2 closed at its outer end by a web 3with the exception of a 35 relatively small suitably shaped dischargeaperture 4 provided in said web 3' adjacent one side of the neck 2. Onthe same side of the neck 2 as the aperture 4, a laterally extendingexternal lug 5 is provided on said neck adjacent the base 40 thereof. Aclosure cap 6 is threaded onto the neck 2 to be screwed down tight onsaid neck with its closed end 1 tight against the web I and its open endslightly clearing the lug I. The closed end I of the cap 6 has formedtherein 45 adlscharge opening 8 similar in size and shape to the opening4 and adapted to be moved into and out of registration with the latterto open and close the tube under rotation of the cap 6 in oppositedirections. A finger-like slightly curved stop 9, preferably ofresilient material, is suitably secured at one end in the rim of theopen end of the cap 6 to extend beyond said rim and engage one side ofthe lug 5 when the 5 cap 6 has been rotated sufilciently to move theopening 8 into registration with the opening 4. The arrangement of thedescribed parts is such, that the opening 8 is moved into registrationwith the opening 4 by unscrewing the cap 6 and fur- 10 ther unscrewingmovement of said cap is blocked by engagement of the stop 9 with the ing5. At the same time the cap 6 may be applied to the neck.2, the stop 9wiping over lug 5 under screwing of the cap 6 onto said neck.

The foregoing will, it is believed, sufiice to impart a clearunderstanding of my invention without further explanation.

Manifestly, the invention as described, is susceptible of modificationwithout departing from the inventive concept, and right is hereinreserved to such modifications as fall within the scope of the subjoinedclaim.

What I claim is: p

A collapsible tube comprising a neck having a web extending across theouter end thereof provided with a discharge aperture therein ofiset fromthe axis of said neck, said neck having an external ing at the basethereof, a cap for said neck having a closing end provided with adischarge aperture therein adapted to mate with said aperture in saidweb, said cap being threaded onto the neck for feeding movement inwardlyand outwardly thereon to locate the aperture in the closing end thereofinto and out of mating position relative to said aperture in said web,and a stop finger extending from the other end of said cap forengagement with said lug under feeding movement inwardly of the cap andin the mating position of said apertures, said cap being operative tooppose'the closing end. thereof flat against the web of said neck underfeeding movement inwardly thereof and while said apertures are out ofmating position, and said finger being flexible to wipe past said lugunder feeding movement of the cap outwardly whereby said cap maybedetached.

HERMAN R. SCI-IROEDER.

